參數(shù)資料
型號: SN74CBT16212CDGG
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: CBT/FST/QS/5C/B SERIES, DUAL 12-BIT EXCHANGER, TRUE OUTPUT, PDSO56
封裝: GREEN, PLASTIC, TSSOP-56
文件頁數(shù): 8/15頁
文件大?。?/td> 384K
代理商: SN74CBT16212CDGG
SN74CBT16212C
24BIT FET BUSEXCHANGE SWITCH
5V BUS SWITCH WITH 2V UNDERSHOOT PROTECTION
SCDS146A OCTOBER 2003 REVISED JANUARY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The SN74CBT16212C is a high-speed TTL-compatible FET bus-exchange switch with low ON-state resistance
(ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the
SN74CBT16212C provides protection for undershoot up to 2 V by sensing an undershoot event and ensuring
that the switch remains in the proper OFF state.
The SN74CBT16212C operates as a 24-bit bus switch, or as a 12-bit bus-exchange that provides data
exchanging between four signal ports. The select (S0, S1, S2) inputs control the data path of the bus-exchange
switch. When the bus-exchange switch is ON, the A port is connected to the B port, allowing bidirectional data
flow between ports. When the bus-exchange switch is disabled, a high-impedance state exists between the A
and B ports.
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that
damaging current will not backflow through the device when it is powered down. The device has isolation during
power off.
To ensure the high-impedance state during power up or power down, each select input should be tied to GND
through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability
of the driver.
FUNCTION TABLE
(each 12-bit bus-exchange)
INPUTS
INPUTS/OUTPUTS
FUNCTION
S2
S1
S0
A1
A2
FUNCTION
L
Z
Disconnect
L
LH
B1
Z
A1 port = B1 port
L
HL
B2
Z
A1 port = B2 port
L
HH
Z
B1
A2 port = B1 port
H
LL
Z
B2
A2 port = B2 port
H
LH
Z
Disconnect
H
L
B1
B2
A1 port = B1 port
A2 port = B2 port
H
B2
B1
A1 port = B2 port
A2 port = B1 port
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SN74CBT16212CDLG4 功能描述:多路器開關(guān) IC 24-Bit Bus-Exchange Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻(最大值):7 Ohms 開啟時間(最大值): 關(guān)閉時間(最大值): 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
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